Global Patent Index - EP 0948726 A4

EP 0948726 A4 2000-03-22 - A THERMAL EXPANSION VALVE AND SYSTEM INCLUDING SUCH DEVICE AND METHOD FOR MAKING SUCH DEVICE

Title (en)

A THERMAL EXPANSION VALVE AND SYSTEM INCLUDING SUCH DEVICE AND METHOD FOR MAKING SUCH DEVICE

Title (de)

THERMISCHES ENTSPANNUNGSVENTIL UND SOLCHE VORRICHTUNG ENTHALTENDE ANORDNUNG UND VERFAHREN ZUR HERSTELLUNG SOLCHER VORRICHTUNG

Title (fr)

DETENDEUR THERMOSTATIQUE, SYSTEME COMPRENANT UN TEL DISPOSITIF ET PROCEDE DE FABRICATION D'UN TEL DISPOSITIF

Publication

EP 0948726 A4 (EN)

Application

EP 97911005 A

Priority

  • US 9718732 W
  • US 3026596 P
  • US 87897997 A

Abstract (en)

[origin: WO9820290A1] A thermal expansion valve (10) comprises a metal tube (24) for flowing a fluid therethrough, and a metal rod (30) fixed only at a first end (32) in the tube and disposed wholly within the tube, the metal tube having a greater coefficient of expansion than the metal rod. A plug (40) having an orifice (42) therethrough is disposed in the tube proximate a free end (34) of the rod. Lengthwise thermal expansion and contraction of the tube and the rod caused by the temperature of the fluid in the tube and around the rod causes the free end of the rod to retreat from the plug to increase flow of the fluid therethrough, and causes the free end of the rod to approach the plug to restrict flow of the fluid therethrough, respectively.

IPC 1-7 (main, further and additional classification)

F25B 41/04; F25B 41/06

IPC 8 full level (invention and additional information)

F25B 41/06 (2006.01); G05D 23/02 (2006.01)

CPC (invention and additional information)

F25B 41/062 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

WO 9820290 A1 19980514; EP 0948726 A1 19991013; EP 0948726 A4 20000322; JP 2002514294 A 20020514; US 5819548 A 19981013; US 5913891 A 19990622

INPADOC legal status


2002-12-11 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020604

2002-01-09 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20011122

2000-03-22 [A4] SUPPLEMENTARY SEARCH REPORT

- Ref Legal Event Code: A4

- Effective date: 20000204

2000-03-22 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE

2000-03-22 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7F 25B 41/04 A, 7F 25B 41/06 B

1999-10-13 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990416

1999-10-13 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE